Fuel Pressure

Fuel Pressure 380-410 kPa 55-60 psi
Ignition ON, command the fuel pump relay ON with a scan tool. Verify the fuel pressure is between 380-410 kPa (55-60 psi) and remains steady for 5 minutes

Volume
Monitor the fuel pressure for 1 minute
Verify that the fuel pressure does not decrease more than 34 kPa (5 psi) in 1 minute.
If the fuel pressure remains constant, replace the fuel pump.
If the fuel pressure drops, locate and replace the leaking fuel injector.

Relieve the fuel pressure to 69 kPa (10 psi). Verify that the fuel pressure does not decrease more than 14 kPa (2 psi) in 5 minutes.

If the fuel pressure decreases more than the specified value, replace the fuel pump